Malware Analysis Report

2024-11-16 13:24

Sample ID 241009-ywj9dashjk
Target 225741eda1e7ace8c3f0d07e42557387bf8f994b5fb77565e90c3926fae2e1efN
SHA256 225741eda1e7ace8c3f0d07e42557387bf8f994b5fb77565e90c3926fae2e1ef
Tags
urelas discovery trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

225741eda1e7ace8c3f0d07e42557387bf8f994b5fb77565e90c3926fae2e1ef

Threat Level: Known bad

The file 225741eda1e7ace8c3f0d07e42557387bf8f994b5fb77565e90c3926fae2e1efN was found to be: Known bad.

Malicious Activity Summary

urelas discovery trojan

Urelas

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Deletes itself

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-09 20:08

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-09 20:08

Reported

2024-10-09 20:10

Platform

win7-20240903-en

Max time kernel

120s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\225741eda1e7ace8c3f0d07e42557387bf8f994b5fb77565e90c3926fae2e1efN.exe"

Signatures

Urelas

trojan urelas

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\poldge.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\225741eda1e7ace8c3f0d07e42557387bf8f994b5fb77565e90c3926fae2e1efN.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\poldge.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\225741eda1e7ace8c3f0d07e42557387bf8f994b5fb77565e90c3926fae2e1efN.exe

"C:\Users\Admin\AppData\Local\Temp\225741eda1e7ace8c3f0d07e42557387bf8f994b5fb77565e90c3926fae2e1efN.exe"

C:\Users\Admin\AppData\Local\Temp\poldge.exe

"C:\Users\Admin\AppData\Local\Temp\poldge.exe"

C:\Windows\SysWOW64\cmd.exe

cmd /c ""C:\Users\Admin\AppData\Local\Temp\sanfdr.bat" "

Network

Country Destination Domain Proto
KR 121.88.5.183:11150 tcp
KR 121.88.5.184:11170 tcp
KR 218.54.28.240:11150 tcp

Files

memory/1568-0-0x0000000000400000-0x000000000043B000-memory.dmp

\Users\Admin\AppData\Local\Temp\poldge.exe

MD5 039c56ea97a853a09a18e6479e40d818
SHA1 e82437d7de712200735a9f2ae45189efaaca4aef
SHA256 e7e246f8a28a1281ae2fad9ad305833e39b2fd781a3f6bbbe2c96e7b9cd28557
SHA512 1da758936341aadc7a0ccdd3b9b1390bf542921ed95c1e5e364dd34a4915a5de1b12ebfc7d5810a9de2ed51f978ff4006788f9af07a95860df64e9d1c42e072c

memory/2252-9-0x0000000000400000-0x000000000043B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\sanfdr.bat

MD5 bf6c4086be51b071163fd7596f32a7ee
SHA1 e3a8c94485f15eaf11ff0b801257e116dc1ee8bb
SHA256 35862351686091219f9596d157b2ed112343daece3b9003a3a0b1074df6b9d4c
SHA512 fedb3bc7e6dcd1ea8dc1295fe68acb723698c3a0f2621c6e370e22e0e70afeb0b46ab7fdd0ad6a81f91f42d9e6d06b1f2cc147c2ce30ba7d47b114282f8c7ed3

memory/1568-18-0x0000000000400000-0x000000000043B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\golfinfo.ini

MD5 3f372385bf24b44385f4b1251d3aca4d
SHA1 83546de6ba8f20bd08a15896d34f6242ed64352f
SHA256 b5edef052667b8380ff98c9ff2029faaaa0b1931818a5ef011ce766193ceda27
SHA512 d2f888908ca52c1a99c3d45e83512e2eafd2cc3ae3b782ef0cc80165c4adaf7e488d1aba2028d83fc39e4b8c96c65f82436a10a94e319b9b8aec1f69cd76e5b7

memory/2252-21-0x0000000000400000-0x000000000043B000-memory.dmp

memory/2252-28-0x0000000000400000-0x000000000043B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-09 20:08

Reported

2024-10-09 20:10

Platform

win10v2004-20241007-en

Max time kernel

95s

Max time network

96s

Command Line

"C:\Users\Admin\AppData\Local\Temp\225741eda1e7ace8c3f0d07e42557387bf8f994b5fb77565e90c3926fae2e1efN.exe"

Signatures

Urelas

trojan urelas

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\225741eda1e7ace8c3f0d07e42557387bf8f994b5fb77565e90c3926fae2e1efN.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\poldge.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\225741eda1e7ace8c3f0d07e42557387bf8f994b5fb77565e90c3926fae2e1efN.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\poldge.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\225741eda1e7ace8c3f0d07e42557387bf8f994b5fb77565e90c3926fae2e1efN.exe

"C:\Users\Admin\AppData\Local\Temp\225741eda1e7ace8c3f0d07e42557387bf8f994b5fb77565e90c3926fae2e1efN.exe"

C:\Users\Admin\AppData\Local\Temp\poldge.exe

"C:\Users\Admin\AppData\Local\Temp\poldge.exe"

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\sanfdr.bat" "

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 133.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
KR 121.88.5.183:11150 tcp
KR 121.88.5.184:11170 tcp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
KR 218.54.28.240:11150 tcp
US 8.8.8.8:53 134.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 139.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

memory/2692-0-0x0000000000400000-0x000000000043B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\poldge.exe

MD5 149545cd459dc52ee3585b17f05b57bd
SHA1 829c43cc9f41f59ab5d367d7a20fa157f6032386
SHA256 d38b11d7fc0a4958b9d09372b3e883d5e6f84aca42a45a2e3d5486a83a2fc38d
SHA512 cebddf84305cc97819e495d9e5c55c160627c73a6703f152ad3b078ef144a39f51134411e831f53024aa15ead91840800f593d3f676a9d8a77162f099e235af3

memory/2692-14-0x0000000000400000-0x000000000043B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\sanfdr.bat

MD5 bf6c4086be51b071163fd7596f32a7ee
SHA1 e3a8c94485f15eaf11ff0b801257e116dc1ee8bb
SHA256 35862351686091219f9596d157b2ed112343daece3b9003a3a0b1074df6b9d4c
SHA512 fedb3bc7e6dcd1ea8dc1295fe68acb723698c3a0f2621c6e370e22e0e70afeb0b46ab7fdd0ad6a81f91f42d9e6d06b1f2cc147c2ce30ba7d47b114282f8c7ed3

C:\Users\Admin\AppData\Local\Temp\golfinfo.ini

MD5 3f372385bf24b44385f4b1251d3aca4d
SHA1 83546de6ba8f20bd08a15896d34f6242ed64352f
SHA256 b5edef052667b8380ff98c9ff2029faaaa0b1931818a5ef011ce766193ceda27
SHA512 d2f888908ca52c1a99c3d45e83512e2eafd2cc3ae3b782ef0cc80165c4adaf7e488d1aba2028d83fc39e4b8c96c65f82436a10a94e319b9b8aec1f69cd76e5b7

memory/3532-17-0x0000000000400000-0x000000000043B000-memory.dmp

memory/3532-23-0x0000000000400000-0x000000000043B000-memory.dmp